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OM5-BP-8-C 8 POSITION ANALOG I/O BACKPANEL, NON-MULTIPLEXED
A temperature sensor is mounted on each channel to provide cold junction
compensation for thermocouple input modules (See Figure 14 for Schematic-
DESCRIPTION
The OM5-BP-8-C analog module mounting board has a capacity of eight
analog input and/or output modules in any combination. It can be mounted
on the OMX-1363-C 19-inch metal rack. A separate analog signal path is
provided for each channel and each channel’s signal is accessible at
redundant 26-pin connectors. The module output switch is continuously
“on” when using this backpanel and all eight module outputs are simulta-
neously accessible to high-speed data acquistion (ADC) boards.
On-board jumpers permit paralleling two OM5-BP-8-C boards to form a
OM5-BP-16-C equivalent. An additional set of inter-channel bridge jumpers
permits connecting an input module’s output to an output module’s input,
providing two levels of isolation (Figures 13, 14).
Jumpers on the OM5-BP-8-C permit user selection of low (i.e. channels 0-
7) or high (i.e. channels 8-15) addresses.
FIGURE 13. OM5-BP-8-C Analog I/O Backpanel.
ELECTRICAL
ADDRESS SELECTION
Module addresses may be selected as low (channels 0-7) or high (channels
8-15) using the sets of 3 pins labeled J5 through J12. Place a jumper over
the two pins closest to the ribbon cable connectors, P1 and P2, to select a low
address (factory configuration) or over the two pins furthest from the ribbon
cable connectors, P1 and P2, to select a high address.
ADJACENT CHANNEL JUMPERS
Adjacent channels may be connected together to provide an isolated output
signal from an isolated input module, providing two levels of 1500V
isolation. This capability is provided with the seven jumpers labeled JP1–
JP7.
SPECIFICATIONS
Operating Temperature: –40°C to +85°C
95% relative humidity, non-condensing
Interface Connector:
Field High Density Screw Clamp, 14 AWG Max
Logic 26-pin, male header connector
0.15"
(3.8mm)
10.32 X 0.40
Ground Lug, Including
Nut and Lockwasher
3.47" (88.1mm)
3.05" (79.5mm)
Barrier Strips for
Field Analog Signal
I/O Termination. (8)
Sockets for Current
Conversion Resistors, OMX-1362-C
+5VDC Supply
1.275" (32.4mm)
5.8"
(147.3mm)
JP7
JP1
9.7"
(246.3mm)
9.5"
(241.3mm)
10.0"
(254.0mm)
Tolerance: ±0.020" (±0.50mm)
26 Conductor
Male Pin
Connectors P1, P2
(1)
0.75"
(19.1mm)
2.25"
(57.2mm)
3.15"
(80.2mm)
Swaged
Standoff
Thru Hole
0.15" (3.8mm) Dia.
(6)
NOTES: (1) Connector is Berg 65863-075 or equivalent.
Mating connector is AMP 49958-6 or equivalent.
Connectors P1 and P2 are wired in parallel for
“Daisy Chaining” up to 8 boards.
OMX-CJC-C
Cold Junction
Compensation Circuit
J12
LH
J5
Pin 1
Pin 2
Pin 1
Pin 2
J1 J2 J3
J4
P1P2